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School roof collapse prompts concrete plank warning


At the start of my career, as a trainee draughtsman from 1970-74, I detailed more than 20 school roofs, mainly in Kent and Herts, using RAAC planks produced by Gascon Building Materials, and was also involved in supervising their installation on site. RAAC was at that time regarded as something of a "wonder material" - relatively lightweight, easy to install, and with good insulation properties etc. But at much the same time high-alumina cement was also in widespread use, which later proved a disadvantage for many structures. We live and (hopefully !) learn. We also detailed a complete pub in the same planks - the "Rifle Volunteer" in Dunstable if I remember rightly. Mike Paul (retired) Stuttgart, Germany

Posted date

16 May, 2019

Posted time

8:29 am